Bad but its a normal part of the maturing process.
Things to do to help get rid of it are:
1. Use only RO/DI water never tap water. Do regular 10 to 20% water changes and use a good quality salt mix.
2. Add more circulation. MaxiJet 1200 powerheads would not be my first choice, they are power hogs at over 20 watts each for only 292 GPH movement. Better choices are Tunze Streams or Nano Streams, Rio Seios or Hydor Koralias. I recently removed a Seio 1100 and 820 in favor of two Koralia #4s and really like them so far. Lower power consumption so less heat, better flow and better mounting option with the magnets instead of suction cups.
3. Gets lots of snails of different varities. Myself I have a couple of Turbos, quite a few Golden Astreas and lots of Nassarius and Cerith snails. I also have two small Fighting Conchs but one would probably work fine.